Exploitation

Exploitation denotes that a person (or a social group) is not paid the equivalent of the value s/he produces through his/her labour. It denotes that some people contribute more to a process of wealth creation than what they receive in return. Within a capitalist economy, exploitation is a must as profits are largely produced by paying people less than the monetary value they produce through their work. Pushing down wages/fees and advocating for free labour is part of a strategy that increases the rate of profit of the employers.

David Harvey debating the problems with capitalism on BBC Hard Talk (2010)